Very poor Lisp performance - comp.lang.lisp

Message from discussion Very poor Lisp performance
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From: Jon Harrop <use...@jdh30.plus.com>
Subject: Re: Very poor Lisp performance
Newsgroups: comp.lang.lisp
Date: Sat, 13 Aug 2005 02:55:39 +0100
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Organization: Flying Frog Consultancy Ltd.
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Jon Harrop wrote:
> ... when
> I try to run their programs with either CMUCL or SBCL they are two orders
> of magnitude slower.

Slight correction - CMUCL is only 1 order of magnitude slower.

Also, I just tried running the ackermann and harmonic tests from the
shootout and they run at the same (fast) speed on my machine as on the
shootout's machine. So it seems the problem is specific to raytracing-like
code.

I'm completely stumped.

-- 
Dr Jon D Harrop, Flying Frog Consultancy
http://www.ffconsultancy.com